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920-450 - ES NetSight Atlas - Dump Information

Vendor Name : Nortel
Exam Code : 920-450
Exam Name : ES NetSight Atlas
Questions and Answers : 61 Q & A
Updated On : March 22, 2017
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920-450 Demo and Sample

Note: Answers are below each question.
Samples are taken from full version.

920-450


QUESTION: 53

A company plans to implement a Communication Server (CS) 1000M Rls.4.0 system for their

two sites. The Main Office is configured with a CS 1000M-Cabinet for 400 users and the

remote location with a Media Gateway 1000B for 250 users. The Main Office is a four-cabinet

configuration; they are configured as Survivable, with one Signaling Server. The remote

location will have a Signaling Server and a Media Gateway. These two locations will be

connected through the WAN. The company is concerned about call processing reliability

should there be a Call Server failure. What is the recommended solution for a Call Server

backup in case of a failure?


  1. Configure an Alternate Signaling Server.

  2. Configure an Alternate H.323 Gatekeeper.

  3. Configure one Cabinet as an Alternate Call Server.

  4. Configure every telephone to have an Alternate Call Server IP address.

  5. Configure the Signaling Server at the remote location to have an Alternate Call Server IP address.


Answer: C


QUESTION: 54

Click the exhibit button.

A customer with a Communication Server (CS) 1000S Rls. 4.0 network wants to address

network resiliency issues for IP Phone 2004 telephone users at the Main Office (site A). Site A contains a Call Server, a Signaling Server with NRS defined, and one Media Gateway. If the Call Server A fails, IP telephones at Site A (denoted as A1and A2 in the exhibit) and IP telephones at site C (denoted as C1and C2 in the exhibit) must still be able to make calls to the IP telephones at site B (denoted as B1 and B2 in the exhibit). What should you do to ensure that this customer's requirements are met?


  1. Install an Alternate Signaling Server at site A.

  2. Configure the Media Gateway at site C as an Alternate Call Server.

  3. Configure the Media Gateway at site A as an Alternate Call Server.

  4. Configure a Media Gateway at site B as an Alternate Call Server.


Answer: C


QUESTION: 55

A customer with a Communication Server (CS) 1000S Rls. 4.0 deployed in a main office and regional office wants to implement Call Server redundancy. They have Symposium Call Center Server (SCCS) 5.0 and CallPilot 2.02 deployed at each site as well. How can the customer implement Call Server redundancy and what is the impact for the applications?


  1. Provision the Media Gateway 1000S as an Alternate Call Server. The SCCS and CallPilot will function properly.

  2. Provision one of the Media Gateway 1000S as an Alternate Call Server. The SCCS and CallPilot will function properly.

  3. Provision a second Call Server as an Alternate Call Server. If the Primary Call Server fails the SCCS and CallPilot will not function.

  4. Provision one of the Media Gateway 1000S as an Alternate Call Server. If the Primary Call Server fails the SCCS and CallPilot will not function.


QUESTION: 56

A customer is installing two Communication Server (CS) 1000M-MG Rls.4.0 systems. They

will be networked using the Corporate WAN. They will have about 2000 IP telephones

including a 500 member Call Center. It is important to the company that the IP telephones

continue to have access to the system in the event of Signaling Server failure. A second

Signaling Server has been purchased to add redundancy. How must the second Signaling

Server be configured and what other function does it serve?


  1. as a Secondary Signaling Server; it monitors the Primary Signaling Server

  2. as a Follower; it acts as an Alternate Gatekeeper in the event of Primary Gatekeeper failure

  3. as an Alternate Signaling Server, acts as Standby and switches with the Main at midnight

  4. as a Follower, load shares the TPS function and takes over for the Leader in the event of failure


Answer: D


QUESTION: 57

Click the exhibit button.

A customer has a CS 1000 Rls. 4.0 network. Site A is the host for the Media Gateway 1000B

at site C. A customer wants to address network resiliency issues for IP Phone 2004 users at the branch office site C, which is denoted as C1 and C2 in the exhibit. The customer wants to ensure that if the WAN connection to the Main Office at site A goes down, calls between the IP telephones at the branch office at site C can still be made. Which solution should you recommend to address the customer's resiliency requirements?



D. No configuration changes are required. The IP telephones at C1 and C2 will reboot and reregister with Signaling Server A through the PSTN.


Answer: C


QUESTION: 58

A customer with a Communication Server (CS) 1000 Rls. 4.0 system wants advanced notice of issues concerning voice quality. You recommend the Proactive Voice Quality Management (PVQM) feature. How does PVQM address the customer's needs? (Choose two.)


  1. controls jitter and latency to maintain call quality

  2. polls IP endpoints during a call to capture quality statistics

  3. preserves the bandwidth of active calls to maintain call quality

  4. proactively reserves bandwidth required to maintain call quality

  5. polls IP endpoints at the end of a call to capture quality statistics


Answer: B, E


QUESTION: 59

Proactive Voice Quality Management (PVQM) allows for the generation of SNMP alarms to notify of voice quality problems by level of severity. What criteria does the PVQM use for generating SNMP alarms?


  1. notification of voice quality issues involving IP telephones

  2. violation of quality thresholds set for Virtual Trunk Routes

  3. violation of voice quality thresholds on a node by node basis

  4. violation of voice quality thresholds set on a bandwidth zone-by-zone basis


Answer: D


QUESTION: 60

The Proactive Voice Quality Measurement (PVQM) feature is beneficial to the administrator because it reports on a voice quality elements such as Jitter, Latency, Packet-loss and R-Value. How does it monitor these elements?


  1. by getting traffic data set up in LD 2 of the CLI

  2. by polling the IP telephones after a call is terminated

  3. by reporting these elements during and at the end of the call

  4. by measuring the data on the Signaling Server and Media Gateways


Answer: C

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